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参数资料
| 型号： | MAX6698UE38+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | 7-Channel Precision Remote-Diode, Thermistor, and Local Temperature Monitor |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL |
| 封装： | 4.40 MM, PLASTIC, MO-153AB, TSSOP-16 |
| 文件页数： | 2/27页 |
| 文件大小： | 489K |
| 代理商： | MAX6698UE38+ |
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MAX6698
ALERT Interrupt Mode
An ALERT interrupt occurs when the internal or external
temperature reading exceeds a high-temperature limit
(user programmable). The ALERT output clears if tem-
perature goes below the high-temperature limit thresh-
old. The ALERT interrupt output signal can also be
cleared by reading the status register(s) associated
with the fault(s) or by successfully responding to an
alert response address transmission by the master. In
both cases, the alert is cleared but is reasserted at the
end of the next conversion if the fault condition still
exists. The interrupt does not halt automatic conversions.
The ALERT output is open drain so that multiple devices
can share a common interrupt line. All ALERT interrupts
can be masked using the configuration 3 register. The
POR state of these registers is shown in Table 4.
ALERT Response Address
The SMBus alert response interrupt pointer provides
quick fault identification for simple slave devices that
lack the complex logic needed to be a bus master.
Upon receiving an interrupt signal, the host master can
broadcast a receive byte transmission to the alert
response slave address (see the Slave Addresses sec-
tion). Then, any slave device that generated an inter-
rupt attempts to identify itself by putting its own
address on the bus.
The alert response can activate several different slave
devices simultaneously, similar to the I2C* General Call.
If more than one slave attempts to respond, bus arbitra-
tion rules apply, and the device with the lower address
code wins. The losing device does not generate an
acknowledgment and continues to hold the ALERT line
low until cleared. (The conditions for clearing an alert
vary depending on the type of slave device.)
Successful completion of the alert response protocol
clears the output latch. If the condition that caused the
alert still exists, the MAX6698 reasserts the ALERT
interrupt at the end of the next conversion.
OVERT Overtemperature Alarms
The MAX6698 has four overtemperature registers that
store remote alarm threshold data for the OVERT out-
put. OVERT is asserted when a channel’s measured
temperature (voltage in the case of the thermistor chan-
nels) is greater than the value stored in the correspond-
ing threshold register. OVERT remains asserted until
the temperature drops below the programmed thresh-
old minus 4°C hysteresis for remote-diode channel 1, or
4 LSB hysteresis for thermistor channels 1, 2, and 3. An
overtemperature output can be used to activate a cool-
ing fan, send a warning, initiate clock throttling, or trig-
ger a system shutdown to prevent component damage.
See Table 4 for the POR state of the overtemperature
threshold registers.
Command Byte Functions
The 8-bit command byte register (Table 4) is the master
index that points to the various other registers within the
MAX6698. This register’s POR state is 0000 0000.
Configuration Bytes Functions
There are three read-write configuration registers
(Tables 5, 6, 7) that can be used to control the
MAX6698’s operation.
Configuration 1 Register
The configuration 1 register (Table 5) has several func-
tions. Bit 7(MSB) is used to put the MAX6698 either in
software standby mode (STOP) or continuous conver-
sion mode. Bit 6 resets all registers to their power-on
reset conditions and then clears itself. Bit 5 disables
the SMBus timeout. Bit 4 enables more frequent con-
versions on channel 1, as described in the ADC
Conversion Sequence section. Bit 3 enables resistance
cancellation on channel 1. See the Series Resistance
Cancellation section for more details. The remaining
bits of the configuration 1 register are not used. The
POR state of this register is 0000 0000 (00h).
Configuration 2 Register
The configuration 2 register functions are described in
Table 6. Bits [6:0] are used to mask the ALERT interrupt
output. Bit 6 masks the local alert interrupt, bits 5
through 3 mask the remote-diode ALERT interrupts, and
bits 2 through 0 mask the thermistor alert interrupts. The
power-up state of this register is 0000 0000 (00h).
Configuration 3 Register
Table 7 describes the configuration 3 register. Bits 5, 4,
3, and 0 mask the OVERT interrupt output for thermistor
channels 1, 2, and 3 and remote-diode channel 1. The
remaining bits, 7, 6, 2, and 1, are reserved. The power-
up state of this register is 0000 0000 (00h).
7-Channel Precision Remote-Diode, Thermistor,
and Local Temperature Monitor
10
______________________________________________________________________________________
*Purchase of I2C components from Maxim Integrated Products,
Inc., or one of its sublicensed Associated Companies, conveys
a license under the Philips I2C Patent Rights to use these com-
ponents in an I2C system, provided that the system conforms
to the I2C Standard Specification as defined by Philips.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6698UE38+ | 功能描述:板上安装温度传感器 7Ch Precision Remote Diode Thermistor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6698UE38+T | 功能描述:板上安装温度传感器 7Ch Precision Remote Diode Thermistor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6698UE38-T | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6698UE99 | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| MAX6698UE99+ | 功能描述:板上安装温度传感器 7Ch Precision Remote Diode Thermistor RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
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